Process of manufacturing fireproof flooring.



IUUI

UUlYll UOI I IUIO,

UNITED STATES Q.: (J v a 4 7 areal/ udy,

Patented September 6, 1904.

PATENT OFFICE.

CARL PLATOYV, OF LEHE, GERMANY.

PROCESS OF MANUFACTURING FIREPROOF FLOORING.

SPECIFICATION forming part of Letters Patent No. 769,355, dated p mb 6,1904.

Application filed September 8, 1903- 3 new and useful Improvements inProcesses of Manufacturing Fireproof Flooring, of which i the followingis a specification.

My invention relates to lmprovem'ents 1n processes of makingself-hardenmg composi- 10 tions, and particularly to those processesfwherein cement used as abasis, and has for 1 its objects the productionof a plastic compound of greatfacility of application and ofhighly-non-inflammable properties and capa- 5 bio of setting andbecoming integral with the part to which it is applied.

According to my invention I employ an oxychlorid cement, a filling offinelydivided wood fiber, and a Portland cement.

part of commercial ma nesia by weight-1 add two parts of sawt ust ant athereto a thirtyper-cent. solution of chlorid of ma nesium and then addtwenty-five per cent., y u i, o

5 Portland cement. The mass is then applied ie ar ic e o be coated in apasty condition to a thickness of about one-third of an inch andmoistened with a solution of chlorid of ma nesium. 1t is then iea e lJDl1e 3 parts asslmil'a'te and allowed 'wmam to set for a period of twelvehours, after which a second coating of equal strength is applied.

The surface thus formed is then kneaded and pressed and polished withpumice-stone and thick oil and when smooth may be oiled and waxed.

A flooring or wall protection made and ap- 1 plied according to theherein-described process can by applying suitable color and qual- 4 ityof the fiber .be arranged to represent any In the carrying out of myprocess to one Serial No. 172,248. (No specimens.)

wood or grain of wood, and the surface to l which it is applied may berough or smooth. It has particular advantage from the fact that 5 itpresents a fireproof covering without scams 1 or joints.

It is obvious that various proportions or relat-ionship of ingredientsmay be made and i that the various steps of the process may be slightlychanged without departing from the spirit and scope of my invention.

hat 1 claim, and desire to secure by Let- I ters Patent, is

1. A process of manufacturing self-hardening compositions that consistsin forming a l paste from magnesia, a filling material, a solution ofchlorid of magnesium and Portland cement, allowing the mass to dry,moistening with a solution of chlorid of magnesium and heating.

2. A process of manufacturing self-hardening coating compositions thatconsists in forming a paste from magnesia, a filling material, chloridof magnesium and Portland cement, al-

tion of chlorid of magnesium, heating, applying a coat of the samecomposition to the hardened surface, then kneading and polishing.

3. A process of manufacturing self-hardening compositions that consistsin forming a paste of magnesia and wood filler by the addition ofchlorid of magnesium, adding to the mass Portland cement in suitablequantities, allowing the mass to dry, moistening the mass with asolution of chlorid of magnesium and heating.

CARL PLATOlY.

W'tnesses:

JorI FEHT, CARL SCHILLER.

lowing the mass to dry, moistening with a solu-' ara

